From Dribbble's About page: Dribbble is show and tell for designers, who share shots — small screenshots of the designs and applications they’re working on. So

From Dribbble's About page: Dribbble is show and tell for designers, who share shots — small screenshots of the designs and applications they’re working on. So, pretty much, he wants people to tag their entries with "Batch" when they use icons from the linked set.